Gradient - Moment 09 Apr 2026

In the context of Magnetic Resonance Imaging (MRI), —often discussed in "Moment 09" or similar lecture series like Rad229 (2020) —is a technique used to minimize motion artifacts, particularly from blood flow or cerebrospinal fluid (CSF). What is Gradient Moment Nulling (GMN)?

GMN, also known as , involves adding extra gradient pulses (lobes) to a pulse sequence to ensure that moving spins do not accumulate a net phase by the time the echo is formed. Gradient - Moment 09

: Additional gradient lobes are designed so that the "first moment" (the integral of gradient strength over time multiplied by time) equals zero at the echo time. Result : In the context of Magnetic Resonance Imaging (MRI),